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arkanoid.cpp: add detailed memory map and proper mirroring of various memory mapped areas. Documented and mapped the joystick ports which, while present and fully functional on the pcb, are unused by the game code. [Lord Nightmare]
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Lord-Nightmare
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@ -194,27 +194,30 @@ Notes:
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GROUND | 1 A | GROUND
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VIDEO RED | 2 B | VIDEO GROUND
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VIDEO GREEN | 3 C | VIDEO BLUE
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VIDEO SYNC | 4 D |
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VIDEO SYNC | 4 D | NC
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SOUND OUT + | 5 E | SOUND OUT -
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POST | 6 F | POST
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| 7 H |
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NC | 7 H | NC
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COIN SW (A) | 8 J | COIN SW (B)
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COIN METER (A) | 9 K | COIN METER (B)
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COIN LOCKOUT (A) |10 L | COIN LOCKOUT (B)
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SERVICE SW |11 M | TILT SW
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START 1 |12 N | START 2
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|13 P |
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|14 R |
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NC* |13 P | NC*
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NC* |14 R | NC*
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1P RIGHT |15 S | 2P RIGHT \
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lP LEFT |16 T | 2P LEFT / Connect 15/16/S/T to the spinner left/right connections
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|17 U |
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|18 V |
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|19 W |
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|20 X |
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[1P RH UP] |17 U | [2P RH UP]
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[1P RH DOWN] |18 V | [2P RH DOWN]
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[1P RH RIGHT] |19 W | [2P RH RIGHT]
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[lP RH LEFT] |20 X | [2P RH LEFT]
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lP SERVE/FIRE |21 Y | 2P SERVE/FIRE
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|22 Z |
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[1P WARP] |22 Z | [2P WARP]
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|-----|
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[] - these are present and readable on arkanoid pcb hardware, but the game never reads or uses these
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* - these NC pins are used for the main joysticks on certain other games
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(bubble bobble etc) which use the 22 pin taito connector, but are N/C and
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do not connect anywhere on the arkanoid pcb.
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Note about spinner controller
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-----------------------------
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@ -793,16 +796,42 @@ DIP locations verified for:
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/***************************************************************************/
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/* Memory Maps */
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/*
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Address maps (x = ignored; * = selects address within this range)
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z80 address map:
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a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 a0
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* * "Manual" decode logic with ic30 and ic29
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0 0 * * * * * * * * * * * * * * R ROM
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0 1 * * * * * * * * * * * * * * R ROM
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1 0 * * * * * * * * * * * * * * R ROM
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* * 74LS139@IC80 side '1' *VERIFY ME*
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1 1 0 0 x * * * * * * * * * * * RW 6116 SRAM
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1 1 0 1 IO AREA
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* * 74LS155@IC25 both sides 1 and 2
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1 1 0 1 x x x x x x x 0 0 x x 0 RW YM2149 BC2 low
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1 1 0 1 x x x x x x x 0 0 x x 1 RW YM2149 BC2 high
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1 1 0 1 x x x x x x x 0 1 x x x W bank/flip/mcu reset register
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1 1 0 1 x x x x x x x 0 1 0 x x R "RH" Joystick bits (unused by game, but present on pcb)
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1 1 0 1 x x x x x x x 0 1 1 x x R "SYSTEM" Start buttons, service buttons, coin inputs and mcu semaphore bits
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1 1 0 1 x x x x x x x 1 0 x x x R "BUTTONS" Fire buttons for p1 and p2, also unused 'warp' buttons for p1 and p2; D4-D7 are open bus!
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1 1 0 1 x x x x x x x 1 0 x x x W Watchdog reset. Watchdog is identical to Taito SJ watchdog, counts 128 vblanks
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1 1 0 1 x x x x x x x 1 1 x x x RW MCU Read and Write latches
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1 1 1 0 VIDEO AREA
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1 1 1 0 * * * * * * * * * * * 0 RW 2016 SRAM@IC57
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1 1 1 0 * * * * * * * * * * * 1 RW 2016 SRAM@IC58
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1 1 1 1 x x x x x x x x x x x x OPEN BUS
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*/
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static ADDRESS_MAP_START( arkanoid_map, AS_PROGRAM, 8, arkanoid_state )
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AM_RANGE(0x0000, 0xbfff) AM_ROM
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AM_RANGE(0xc000, 0xc7ff) AM_RAM
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AM_RANGE(0xd000, 0xd001) AM_DEVWRITE("aysnd", ay8910_device, address_data_w)
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AM_RANGE(0xd001, 0xd001) AM_DEVREAD("aysnd", ay8910_device, data_r)
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AM_RANGE(0xd008, 0xd008) AM_WRITE(arkanoid_d008_w) /* gfx bank, flip screen, 68705 reset, etc. */
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AM_RANGE(0xd00c, 0xd00c) AM_READ_PORT("SYSTEM") /* 2 bits from the 68705 */
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AM_RANGE(0xd010, 0xd010) AM_READ_PORT("BUTTONS") AM_DEVWRITE("watchdog", watchdog_timer_device, reset_w)
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AM_RANGE(0xd018, 0xd018) AM_DEVREADWRITE("mcu", arkanoid_mcu_device_base, data_r, data_w) /* input from the 68705 */
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AM_RANGE(0xc000, 0xc7ff) AM_RAM AM_MIRROR(0x0800)
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AM_RANGE(0xd000, 0xd001) AM_DEVWRITE("aysnd", ay8910_device, address_data_w) AM_MIRROR(0x0fe6)
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AM_RANGE(0xd001, 0xd001) AM_DEVREAD("aysnd", ay8910_device, data_r) AM_MIRROR(0x0fe6)
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AM_RANGE(0xd008, 0xd008) AM_WRITE(arkanoid_d008_w) AM_MIRROR(0x0fe7) /* gfx bank, flip screen, 68705 reset, etc. */
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AM_RANGE(0xd008, 0xd008) AM_READ_PORT("SYSTEM2") AM_MIRROR(0x0fe3) /* unused p1 and p2 joysticks */
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AM_RANGE(0xd00c, 0xd00c) AM_READ_PORT("SYSTEM") AM_MIRROR(0x0fe3) /* start, service, coins, and 2 bits from the 68705 */
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AM_RANGE(0xd010, 0xd010) AM_READ_PORT("BUTTONS") AM_DEVWRITE("watchdog", watchdog_timer_device, reset_w) AM_MIRROR(0x0fe7)
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AM_RANGE(0xd018, 0xd018) AM_DEVREADWRITE("mcu", arkanoid_mcu_device_base, data_r, data_w) AM_MIRROR(0x0fe7) /* input from the 68705 */
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AM_RANGE(0xe000, 0xe7ff) AM_RAM_WRITE(arkanoid_videoram_w) AM_SHARE("videoram")
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AM_RANGE(0xe800, 0xe83f) AM_RAM AM_SHARE("spriteram")
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AM_RANGE(0xe840, 0xefff) AM_RAM
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@ -970,11 +999,25 @@ static INPUT_PORTS_START( arkanoid )
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PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_COIN2 )
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PORT_BIT( 0xc0, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, arkanoid_state, arkanoid_semaphore_input_r, nullptr) // Z80 and MCU Semaphores
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PORT_START("BUTTONS")
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PORT_START("SYSTEM2") // these are the secondary "RH" joystick ports for P1 and P2; the circuitry to read them is populated on the arkanoid PCB, but the game never actually reads these.
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/*PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_UP )
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PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_DOWN )
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PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_RIGHT )
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PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_LEFT )
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PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_UP ) PORT_COCKTAIL
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PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_DOWN ) PORT_COCKTAIL
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PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_RIGHT ) PORT_COCKTAIL
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PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_LEFT ) PORT_COCKTAIL*/
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PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNKNOWN )
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PORT_START("BUTTONS") // button 2 for players 1 and 2 the circuitry is populated to read them, but the game never uses them
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PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 )
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//PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 )
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PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
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PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
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PORT_BIT( 0xf8, IP_ACTIVE_LOW, IPT_UNKNOWN )
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//PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL
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PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
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PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNKNOWN )
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PORT_START("MUX")
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PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, arkanoid_state,arkanoid_input_mux, "P1\0P2")
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